>>15599559UNIRONIC ANSWER HERE:
I'm a burger Engineer.
the reason we cant have this is because of cripples. Yes, cripples, they got the ADA (Americans with disabilities act) passed, and that requires any building with more than 3 floors to have an elevator.
This makes it so 4-story buildings are much more expensive than 3 story buildings(both in construction costs and maintenance), and as such the majority of buildings we make are 3-story or below
If they got rid of cripple accommodations our nation would look much different